According to the passage, Dunham’s work in anthropology differed from ... ...

According to the passage, Dunham’s work in anthropology differed from that of most other anthropologists in the 1930s in that Dunham
(A) performed fieldwork for a very extended time period
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in PT70 (Oct 2013): Reading Comprehension